Question

What is the perimeter of a triangle with the following sides: (−5x2+9x),(7x2+7),(3x−5)?

Answer 1

$perimeter \: = sum \: of \: all \: sides$

$p \: = - 5 {x}^{2} \: + 9x \: + 7 {x}^{2} + 7 + 3x - 5$

$perimeter \: = 2 {x}^{2} + 12x + 2 \: units$